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Contract OI history

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Dec 18, 2026 EXPIRATION

ROOT $50.00 Put

ROOT261218P00050000

Latest saved OI116Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ROOT $50.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 116580 2026-10-09: 72 OI2026-10-13: 72 OI2026-10-14: 72 OI2026-10-15: 91 OI2026-10-16: 111 OI2026-10-21: 116 OI2026-10-23: 116 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ROOT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1160
Oct 21, 2026116+5
Oct 16, 2026111+20
Oct 15, 202691+19
Oct 14, 2026720
Oct 13, 2026720
Oct 09, 202672No prior observation